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zhannawk [14.2K]
4 years ago
15

Which statement correctly describes an atom of the element helium? (9)

Chemistry
1 answer:
Luden [163]4 years ago
8 0

C. An atom of helium has its valence electrons in its first energy level, it wouldn't and can't satisfy the Octet rule as it only has 2 electrons, but with 2, it has a full shell, as the first energy level can hold only 2 electrons.

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Kepler was able to determine that the planets move slowest when they are _____.
kherson [118]
Planets move slower when they are furthest from the sun. But when they are closer they move faster because of the gravitational pull of the Sun.

Hope this helps.


6 0
4 years ago
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Considering 2N2H4(g) + N2O4(g) -> 3N2(g) +4H2O(g)
Tema [17]

Answer:

107.8

Explanation:

64 gram of N2H4 produce 72 gram of H20

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3 0
3 years ago
Help ASAP 40 pts If answer 6
Olenka [21]

Answer:

1. B

2. C.

3. C

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5. A

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Explanation:

i think?

3 0
3 years ago
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What are dipoles, and what is the difference between a natural dipole and an induced dipole?
Tasya [4]

Answer:

See explanation below.

Explanation:

Dipoles are molecules that have partial charges. It happens because of the difference in electronegativity of the elements. This property is the tendency that the atom has to take the electron to it, so, in the covalent bond, the shared pair of electrons is easily found at the more electronegativity atom, and so, it has a partial negative charge, and the other, a partial positive charge. This is a natural dipole.

If the difference of electronegativity is 0, or extremely close to 0, then the molecule is nonpolar, and so the molecule doesn't have partial charges. But, to be joined together and form the substance, the partial charge must be induced, so it's an induced dipole.

7 0
3 years ago
Moraines left by glaciers are different from deposits left by rivers because the rocks left behind are _____.
12345 [234]

Explanation:

unorganized and unsorted i think this is the answer

7 0
3 years ago
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